检索结果-南通市图书馆

Impacts of climate change on water quantity, water salinity, food security, and socioeconomy in Egypt

Water Science and Engineering 2021年第1期14卷 17-27页

作者： Mohie El Din Mohamed Omar ahmed moustafa ahmed moussa Reinhard Hinkelmann National Water Research Center Fum Ismailiya CanalShoubra El-Kheima 13411Egypt International Center for Agricultural Research in the Dry Areas Cairo 2416Egypt Nile Research Institute(NRI) National Water Research CenterEl-Qanater 13621Egypt Department of Water Engineering Technische Universit€at Berlin(TU Berlin)Campus El GounaEl Gouna 84513Egypt

Climate change might have direct impacts on water quantity in Egypt and lead to indirect effects on Mediterranean saltwater intrusion to groundwater,which exposes agriculture to *** study investigated impacts of climate change on agriculture,with particular regard to food security and socioeconomy,and quantified the effectiveness of cropping pattern adaptation measures by integrating three mathematical *** BlueM model was used for hydrological simulations of Nasser Lake under flooding scenarios to predict the water supply from the High Aswan *** water and salinity balance(WB-SAL)model was adopted to estimate the water salinity in the Nile *** simulated results from the BlueM and WB-SAL models were integrated with the agricultural simulation model for Egypt(ASME)to project cropping patterns,food security,and socioeconomy throughout the *** results showed that future climate change will directly affect the total crop area;crop areas for 13 crop types;the self-sufficiency of wheat,rice,cereal,and maize supplies;and socioeconomic *** proposed cropping pattern adaptation measures focus on fixing the crop areas of rice and orchards and providing half of the population with lentils,maize,onion,vegetables,milk,and *** adaptation measures have the potential to promote food security without causing deterioration of the socioeconomic ***,water availability has much more significant effects on food security and socioeconomy than cropping pattern adaptation measures ***,the country should rationalize water use efficiency and increase water supply.©2021 Hohai *** and hosting by Elsevier *** is an open access article under the CC BY-NC-ND license(http://***/licenses/by-nc-nd/4.0/).

关键词： Climate change Water quantity Salinity Cropping pattern adaptation measures Food security Socioeconomy

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Saffron(Crocus sativus L.) stigmas as a potential natural additive to improve oxidative stability attributes of sunflower(Helianthus annuus L.) oil stored under different conditions

引用

Grain & Oil Science and Technology 2024年第3期7卷 133-149页

作者： moussa Nid ahmed Karima Abourat Jamila Gagour El Hassan Sakar Khalid Majourhat Said Gharby Biotechnology Analytical Sciences and Quality Control TeamPolydisciplinary Faculty of TaroudantUniversity Ibnou ZohrMorocco Laboratory of Biology Ecologyand HealthFSAbdelmalek Essaadi UniversityTetouanMorocco Geo-Bio-Environmental Engineering and Innovation Laboratory Polydisciplinary Faculty of TaroudantUniversity Ibnou ZohrAgadirMorocco

The aim of our study was to explore the antioxidant potential of Moroccan saffron stigmas(SS) and examine their performance as a natural antioxidant in enhancing the stability and quality properties of edible sunflower oil(SO), with a focus on understanding the critical importance of edible oil stability for predicting quality deterioration during storage. Bearing this in mind, our research was designed to compare the efficacy of three concentrations of dried SS(at 0.2%, 0.3%, and 0.6%) against tocobiol(a synthetic antioxidant) as a positive control(at 0.3% concentration). This comparison was conducted under three distinct storage conditions namely accelerated ageing(60 ℃), exposure to light at ambient temperature, and darkness, to evaluate their impact on preventing severe oxidation and extending oil shelf-life. Oxidation state evolution was evaluated through peroxide value(PV), free fatty acid(FFA), anisidine value(p-AV), K_(270)value(conjugated trienes), total oxidation index(TOTOX), iodine value(IV), and fatty acid composition(FA). Our results revealed notable differences in stability tracking parameters. Specifically, these parameters were higher in samples stored under accelerated conditions, followed by the samples stored in ambient light, while those stored in darkness showed the highest stability among the three storage conditions. Supplementation of sunflower oil with SS and tocobiol significantly enhanced its oxidation stability. Notably, SS exhibited exceptional effectiveness in stabilizing sunflower oil regardless of SS dose, with the highest efficacy observed at 0.6%. This was evidenced by the slower rate of oxidation parameters under various storage conditions, highlighting a superior antioxidant activity compared to both the non-enriched oil and tocobiol-enriched oil. Furthermore, saffron stigmas, used as a natural supplement,contributed to the preservation of polyunsaturated fatty acids, indicating its potential as a robust source of natural antioxi

关键词： Crocus sativus L. Helianthus annuus L. Saffron stigmas Shelf-life Sunflower oil Tocobiol

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

A WORK IN PROGRESS

引用

Beijing Review 2024年第24期67卷 22-23页

作者： ahmed moustafa Asia Center for Studies and Translation

China-Arab cooperation is a dynamic and multifaceted/rapport that has evolved over the past decades and today transcends *** 1Oth Ministerial Conference of the China-Arab States Cooperation Forum(CASCF),held in Beijing on May 30,marked a renewed commitment to cooperation in different sectors,including trade,investment,infrastructure,energy and *** two decades since the forum's launch have seen a significant rise in bilateral trade,significant infrastructure projects and increased cultural exchange.

关键词： investment PROGRESS cooperation

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Analysis of the Characteristics of Materials Obtained by Recycling Scrap Metal in Guinea

引用

材料科学与工程（中英文A版） 2024年第1期14卷 1-10页

作者： Alpha Issa Diallo Jean ahmed Kourouma Adama moussa Sakho Alexandre Lucien Richard Mechanical Laboratory Higher Institute of Technology of MamouMamou 063Republic of Guinea Materials Laboratory of Gamal Abdel Nasser University ConakryMamou1147Republic of Guinea Department of Laboratory Technology Higher Institute of Technology of MamouMamou 063Republic of Guinea

The aim of this study was to determine the quality of rebar produced from recycled scrap metal collected throughout the country,and imported rebar sold in the Republic of *** do this,the samples were subjected to various mechanical tests involving traction,bending and microscopic *** the Lambanyi and Casse Sonfonia samples,all the tensile strength values for diameters 12,14 and 16 were above 550 ***,the iron samples from Baillobaye and the 10 mm diameters of the samples from Casse Sonfonio and Lambanyi have less appreciable *** limits of elasticity were *** various values found vary more or less from the conventional yield strength of the NF A35-016 reference supplied by CBITEC,which is 500 *** analysis gives us an insight into the internal structure of the iron samples *** study may provide the company and the vendors with an alternative for their improvements.

关键词： Steel in construction recycled scrap strength test traction bending.

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Tectonic Style Associated with the Doleritic Dykes of the Téra-Ayorou Pluton (Liptako, Western Niger)

引用

International Journal of Geosciences 2024年第8期15卷 567-581页

作者： Kamayé Tourba Gambo Ranaou Noura Abdou Dodo Bohari Karimou Dia Hantchi Mallam Mamane Hallarou Hassane Ibrahim Maharou Yacouba ahmed moussa Konaté Groundwater and Georesources Laboratory Department of Geology Abdou Moumouni University Niamey Niger UMR of Water Sciences Mineral Resources Uses and Management Dan Dicko Dankoulodo University Maradi Niger

The doleritic dykes present in the Téra-Ayorou pluton crosscut the basement of the Nigerien Liptako and are part of the system of intrusive mafic dykes in the Paleoproterozoic domain of the Léo-Man ridge. In the previous work, emphasis was placed on the petrology, geochemistry and geochronology of the Liptako doleritic dykes. This study aims to analyze the tectonic style of intrusive doleritic dykes in the Téra-Ayorou pluton. The characterization of the deformation which affected the doleritic dykes of the Téra-Ayorou pluton is important for the evaluation of their economic potential. To this end, measurements of tectonic structure planes were taken in the field, and samples were taken from the chilled margin and cores of dolerite dykes, before being processed in the laboratory. Analysis of the tectonic structures collected revealed a brittle tectonic pattern, characterizing a phase of deformation subdivided into two episodes D1 and D2. Episode D1, with its subvertically dipping normal faults and simple N70˚ - N110˚ fractures, is compatible with N-S extension. On the other hand, episode D2, which created shear corridors by reactivation of pre-existing fractures and oriented N150˚ - N170˚, is associated with a WSW-ENE extension. These results open up prospects for the exploration of gold, uranium mineralization and diamonds in the north-west of Niger.

关键词： Dolerite Dykes Associated Structures Deformation Phases North Liptako Niger

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

On Learning Adaptive Service Compositions

引用

Journal of Systems Science and Systems Engineering 2021年第4期30卷 465-481页

作者： ahmed moustafa Department of Computer Science Nagoya Institute of TechnologyGokiso-choShowa-kuNagoyaAichi466-8555Japan Faculty of Informatics Zagazig UniversityZagazigEgypt

Service composition is an important and effective technique that enables atomic services to be combined together to forma more powerful service,i.e.,a composite *** the pervasiveness of the Internet and the proliferation of interconnected computing devices,it is essential that service composition embraces an adaptive service provisioning *** learning has emerged as a powerful tool to compose and adapt Web services in open and dynamic ***,the most common applications of reinforcement learning algorithms are relatively inefficient in their use of the interaction experience data,whichmay affect the stability of the learning process when deployed to cloud *** particular,they make just one learning update for each interaction *** paper introduces a novel approach that aims to achieve greater data efficiency by saving the experience data and using it in aggregate to make updates to the learned *** proposed approach devises an offline learning scheme for cloud service composition where the online learning task is transformed into a series of supervised learning tasks.A set of algorithms is proposed under this scheme in order to facilitate and empower efficient service composition in the cloud under various policies and different *** results of our experiments show the effectiveness of the proposed approach for composing and adapting cloud services,especially under dynamic environment settings,compared to their online learning counterparts.

关键词： Service composition reinforcement learning cloud services offline learning

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Evaluation of the Strategy and Efficacy of Treatment of Chronic Viral Hepatitis C with the Sofosbuvir/Daclatasvir Combination in a Resource-Limited Country

引用

Open Journal of Gastroenterology 2024年第7期14卷 233-240页

作者： Mayanna Habkreo Ali Mahamat moussa Adama ahmed Ngare Abdraman Kossou Tahir Mahamat Saleh Maire Dehainsala Mahamat Ali Hachim Mahamat Ali Bolti Oumaima Djarma Joseph Madtoingue Service de Gastroentrologie/Mdecine Interne du Centre Hospitalier Universitaire la Rfrence Nationale NDjamena Chad Service de Gastroentrologie du Centre Hospitalier Universitaire la Renaissance NDjamena Chad Service de Maladies Infectieuses du Centre Hospitalier Universitaire la Renaissance NDjamena Chad Service de Maladies Infectieuses du Centre Hospitalier Universitaire la Rfrence Nationale NDjamena Chad

Introduction: The treatment of viral hepatitis C (HCV), a major public health problem, has evolved considerably since the introduction of direct-acting anti-virals (DAAs). The aim of this study was to evaluate the strategy for initiating treatment with Sofosbuvir/Daclatasvir, and also to assess its efficacy. Patients and Methods: Included were patients aged at least 15 years, with detectable hepatitis C viremia and treated with a pan-genotypic Sofosbuvir/Daclatasvir regimen at the Centre “Hospitalier Universitaire la Référence Nationale de N’Djamena” between October 2019 and October 2023. The APRI score was used to assess fibrosis. Cure was defined by an undetectable viral load 12 weeks after the end of treatment. Results: A total of 835 patients were included (sex ratio 1.55, mean age 50.5 ± 13.73, extremes 20 and 84 years). The 60 - 69 age group was the most represented. The mean APRI score was 0.42 ± 0.29, with extremes of 0.019 and 1.84. The mean viral load was 2,316,193.086 IU/mL. All subjects had good renal function. Cytolysis was absent in 70% of cases. Without genotyping, a pan-genotypic regimen was used in all patients: Sofosbuvir (400 mg)/Daclatasvir (60 mg). The cure rate was 99.4%, with good tolerability. However, four cases of failure were recorded out of the 668 patients who underwent follow-up HCV-PCR testing after 12 weeks of treatment. Conclusion: The Sofosbuvir/Daclatasvir regimen is highly effective, with an excellent safety profile. However, the still high cost of these molecules limits their accessibility to a large proportion of patients.

关键词： Efficacy Tolerance Sofosbuvir/Daclatasvir HCV Chad

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Relative performance of novel blast wave mitigation system to conventional system based on mitigation percent criteria

引用

Defence Technology（防务技术） 2021年第3期17卷 912-922页

作者： moustafa Esa Mostafa S.Amin ahmed Hassan Eng.Mechanics Dept. Military Technical CollegeKobry ElkobbahCairoEgypt Civil Eng.Dept. Military Technical CollegeKobry ElkobbahCairoEgypt

Recent researches focused on developing robust blast load mitigation systems due to the threats of terrorist *** of the main embraced strategies is the structural systems that use mitigation *** are developed from a combination of structural elements and described herein as conventional *** the promising techniques is that redirect the waves propagation through hollow *** blast wave propagation through tubes provides an efficient system since it combines many blast wave phenomena,such as reflection,diffraction,and *** this research,a novel blast load mitigation system,employed as a protection fence,is developed using a technique similar to the technique of the bent tube in manipulating the *** relative performance of the novel system to the conventional system is evaluated based on mitigation percent *** of both systems are calculated through numerical *** proposed novel system proved to satisfy high performance in mitigating the generated blast waves from charges weight up to 500 kg TNT at relatively small standoff distances(5 m and 8 m).It mitigates at least 94%of the blast waves,which means that only 6%of that blast impulse is considered as the applied load on the targeted structure.

关键词： Blast mitigation Blast barriers Protection system Mitigation percent Protection evaluation

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Ibuprofen-Induced Toxic Epidermal Necrolysis:A Case Report

引用

International Journal of Dermatology and Venereology 2024年第2期7卷 108-110页

作者： Nevin Kannappilly Mohamed Z.Peediyakkal Mohamad Y.Khatib Dore C.Ananthegowda moustafa S.Elshafei Hani El Zeer Karimulla S.Shaik Moayad M.AlFayoumi Dyaneshwar P.Mutkule ahmed A.Soliman Abdulqadir J.Nashwan Critical Care Department Hamad Medical Corporation(HMC)Doha 3050Qatar

Introduction:Toxic epidermal necrolysis(TEN)is a medical emergency that most commonly occurs as an adverse effect of certain ***,we describe a case of a 41-year-old man with no comorbid illness who developed *** presentation:The patient had been prescribed ibuprofen for myalgia and developed skin lesions after the single *** lesions were erythematous papules and macules distributed all over the body after ibuprofen *** was diagnosed based on the patient’s clinical presentation and laboratory *** was treated with intravenous dexamethasone,intravenous immunoglobulin,and *** dressing changes and skin care was done with saline,chlorhexidine,and liquid *** patient was intubated and tracheostomized,and he gradually improved and ***,he developed septicemia in the intensive care unit and was treated ***:The management of TEN includes cessation of the causative cause,multidisciplinary intensive care unit(ICU)care,prevention and early detection of sepsis,fluid and electrolyte balance,adequate analgesia and temperature control,proper organ support,aggressive nutritional management,and good psychological *** pharmacological therapy for TEN includes corticosteroids,intravenous immunoglobulin,and *** key elements of management are aseptic care and proper dressing of the ***:TEN is associated with high mortality if not managed in a systemic and protocolized way.

关键词： ibuprofen toxic epidermal necrolysis erythema drug-induced erythema

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Using nanotechnology to prevent fines migration while production

引用

Petroleum 2021年第2期7卷 168-177页

作者： Mohamed Mansour Mohamed Eleraki ahmed Noah El-Abbas moustafa Faculty of Science Zagazig UniversityEgypt Egyptian Petroleum Research Institute(EPRI) Egypt The British University Egypt

Formation damage due to fines migration is a major reason for well productivity decline for oil and gas *** fines are small enough to pass through pore throats causing pore plugging and permeability *** factors affect fines migration such as flow rate,salinity,pH value,reservoir temperature and oil polarity,as well as changes in chemical environment induced by Enhanced Oil Recovery(EOR)*** paper focuses on the effect of flow rates on fines detachment from the grain surfaces,which causing permeability *** the fluid inside the reservoir moves towards the wellbore,the fluid velocity increases,when the fluid reaches the critical flow rate these fines can be picked up into the *** fines captured by thinner pore throats causing pore plugging and permeability *** concentrations of nanoparticles were used to fix these fines on their sources and prevent their mobilization at high flow *** unique technique used in this study is changing the potential surfaces between fines and grain surfaces to prevent fines movement above the critical flow ***_(2)and MgO NPs used in this study can be adsorbed on the pore surfaces and reduce the repulsion forces between fines and pore ***_(2) and MgO nanoparticles at different concentrations(0.25,0.50 and 0.75 g/L)were used on treating the Abu-Rawash sandstone reservoir using Formation Damage System Cell *** experimental studies showed that using MgO NPs would prevent fines detachment from the pore surfaces and decrease the reduction of permeability at high flow rates more than SiO_(2) *** optimum concentration of MgO NPs was at 0.5 g/L as the permeability remediation at this concentration reaches to 64.83%.

关键词： Formation damage Fines migration Nanoparticles Zeta potential Permeability reduction Fluid flow rate

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：